The impwagent program creates a temporary directory in an insecure
manner in /tmp using predictable directory names without checking
the return code of mkdir, so it's possible to seize a permission
of the temporary directory by local access as another user.

The immknmz program creates a temporary file in an insecure manner
in /tmp using a predictable filename, so an attacker with local
access can easily create and overwrite files as another user.

These problems have been fixed in version 141-18.1 for the current
stable distribution (woody), in version 133-2.2 of the old stable
distribution (potato) and in version 141-20 for the unstable
distribution (sid).